[onion2k]

Tulipmania lasted 6 months. Bitcoin is now 8 years old.

Tulipmania includes the time it took for the belief that tulips were special and valuable to take hold, and the time it took for merchants to cross breed specific colors for the Dutch nobility. When you include the history behind the bubble and why it happened, tulipmania took decades.

That's not to say that Bitcoin will end the same way, but it is to say that bubbles don't start and end within 6 months.